AnsweredAssumed Answered

Crystal selection for AD9912 that yields best SFDR?

Question asked by DavidLee on Jun 13, 2014
Latest reply on Apr 22, 2017 by arunkuttath

The specs for the AD9912 SFDR are measured when the device is driven by a 1GHz synthesizer that probably costs more than a new Tesla roadster.

 

Using an external crystal and the PLLs degrades the SFDR (of course).

 

Can you recommend a strategy for selection of the external crystal that best reduces SFDR while keeping costs low?

 

I'm aware of some lovely 1GHz oscillator modules for about $50, but I'd like to do some due diligence for the crystal.

 

Cheers,

David

Outcomes